When could I have ovulated?

Hey everyone I have a question about ovulation I use easy@home strips.. I had gotten my first positive test on the evening of Friday July 26 (didn't test any further beyond this day but Premom calculated it as peak 1.26); I also had egg white cm the 26, 27, 28, and had wet watery starting to turn creamy cm on July 29 or 30th..believe it was the 30th though. When could I have ovulated? Because I thought that once you get creamy cm you've already ovulated.. but would I have ewcm on Sunday/Monday if I ovulated on Saturday? Or is it possible I didn't ovulate until Sunday or Monday?? Thanks in advance!!